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Perhaps you could just hang two elevators on one set of cables in the same shaft? They will have to move in sync and the range will be cut in half, but the thro
by DenisM 9y ago
Perhaps you could just hang two elevators on one set of cables in the same shaft? They will have to move in sync and the range will be cut in half, but the throughput will nearly double during the rush hour. In a tall building could be an acceptable tradeoff.
- jdavis703 9y agoThat makes it a lot harder to have a dramatic lobby, which is an important component of most skyscrapers.
- wlesieutre 9y agohttps://en.wikipedia.org/wiki/Double-deck_elevator https://en.wikipedia.org/wiki/Double-deck_elevator is like that, but right on top of each other so the range isn't reduced. Most people are going between the ground floor and whatever floor their destination is on, so a shaft with two cars that go 0-50 and 51-100 wouldn't be very useful.
- DenisM 9y agoIndeed. Same article also covers shared-shaft elevators, exactly as I described.
- wlesieutre 9y agoAh, sky lobbies are a neat solution to get more efficient use out of the two elevators, I've never encountered one of those!
- willyt 9y agoActually it's quite common to have cars in the same 'shaft' serving a subset of floors. The original world trade centre towers pioneered this system. Express elevators take you to transfer lobbies and then you transfer to local elevators for intermediate floors. The locals for different sets of levels occupy the same footprint within the building.